Valve lock



Nov. 10 1925' 1,561,059

G. DANKO VALVE LOCK I Filed May s, 1925 3 NIQ GLDanA Patented Nov. ll), 1925.

UNITED STATES'PATENT OFFICE.

oonrnnn DANKO, or CI-IICAGO, ILLINOIS.

- vanvn noon.

Application filed May 6, 1925. Serial No. 28,487.

ranges and stoves, to guard against inadvertent opening of thevalve, the main object of, the invention being the provision of an adjustable lock fitting various lengths of valve stems.

Another object of the invention is to improve the construction of locks of the character stated.

\Vith the above general objects in viewand others that will appear as the nature of the invention is better understood, the

same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawing and pointed out the appended claims. In the drawing forming a part of this a)plication, and in which like designating c aracters refer to corresponding parts throughout the several views,

Fig. 1 is an elevational view of the look as applied to the valve stem and casing in ordinary gas range;

Fig. 2 is a view similar to that ot'Fig. '1 showing the invention from a different an 1e;

on line of the invention Cooperating therewith; and

Fig. 7 is an enlarged'view, partly in elevation and partly in section, showing the "modified form ofthe invention. Referring in detail to the drawing there is shown a valve casing 10 having a tapered,

bore for receiving therewithin valve plug 11. Said. valve plug is held-in position within the valve casing-by means of Washers I Fig.3 is a longitudinal cross-sectional view through the valve stem and easing taken casing and stem showing a modified form' 12, spring 13 interposed between said washers, and screw 14.

Thez'valve casing is provided with exterrialljthreaded projection 15 by means" of which the valve casing is adjusted upon amanifold. A nozzle 16'is provided at an opposite point of the valve casingand is adapted to receive a regulating thimble 17 through which gas is supplied to the burner.

"Transversely of the casing 10 and through the projection 15 and nozzle '16 there is a bore 18 supplying the gas from the mani fold, said valve plug 11 being in the path of said bore for opening or closing the bore as is obvious.

The valve plug 11 has a shank 19 and head 20 to which a handle 21 is secured Near the upper end by means of screw 22. of valve plug 11 and ad acent said shank 19 the casing-10.11215 an arcuate notch 28 terminating with walls 24 and 25. Said walls limit the rotary movement of the valve plug 11 within the tapered bore in the easing 10 through the medium of pin 26 formed on the valve plug 11 and remaining within the notch 23. hen said pin 26 abuts the wall 25, as shown on Figs. 2 and 3, the

valve plug blocks the bore 18 and thus shuts oi? the supply of gas therethrmigh. When said pin remains close to wall 24. the bore 27 in the valve plug 11 registers. with the bore 18 and permits the passage of the gas through the valvecasing 10 to the burner.

All the parts heretofore referred to are of the usual construction.

My invention embodies a plate 28 suitably formed to overlie .shank 19 and head 20. The partof the plate adjacent the head 20 is provided with aperture 29 for the purpose of passing screw 22 therethrough, said part remaining interposed between head 20 and handle 21 and by means of screw 22 being clamped to the head 20. The lower part of the plate 28'is provided with a screw 30, which, bearing against shank. 19, prevents shifting of the plate 28 during the clamping process of the plate by screw 22. y Plate 28, at the upper end of shank 19 I and adjacent the head 20,. has an integrally .formed extension 31 which is'bent toward the shank 19 to form a U-shaped clamp'32,

as plainly seen on Fig. 4, within which lever 33 is pivoted. The outer end ot said lever is provided with a cup-shaped {head 34 within which a coil spring is mounted and which remains interposed between said cup-shaped head 34. and head 20 of the valve plug 11. a

The other end of lever 33 carries an extensible sheath 36 having a series of apertures 37. Said end of lever is likewiseprovided with a series of apertures as plainly seen on Fig. 1 for extending the sheath beyond the end of the lever and aflixing it thereto by means of a screw such as 38.

I The lower portion ofplate 28 is provided with a-similar extension 39 whichpasses be low the lever 33 and terminates in an outwardly projectinglug or flange which abuts the adjacent wall of sheath 36.

The modified form of the invention, shown on Figs. 6 and 7, comprises all the parts embodied in the preferred form of the invention with the exception that the lever 33 has a round'threaded portion 4-1' adapted to receive the tubular sheath 4-2 threadedly adjustable upon portion 41. A lock nut 43 prevents the creeping movement of said tubular sheath 42.

When the valve is closed the lever 33 with the sheath 36 or 42 remains close to the wall 24 in the notch 23, preventing the rotary movement of the valve plug 11 and conse quently the angular movement of handle 21;

In order to open the valve the cup-shap'ed head 34 must be pressed against the tension of spring 35 toward the head 20; This operati'on elevates the lever 33 with its sheath and when said lever'is beyond the wall of the casing, that is removed from abutment with wall 24, the handle 21 maybe turned and valve openedQ When the valve is opened the lever 33 rests upon the outer wall of casing 10, and pin 26 comesin abutment with wall 2-1. Further movement ot the handle will be prevented due to said abut.- ment of pin 26 against the wall 24:.

On turning handle 21 in the opposite direction from that mentioned in order to close the valve, the lever 33 with its sheath 36 or 42 will ride upon the casing and as it comes into the path of notch 26 will drop into said notch owing to the pressure exerted by the spring 35 at the head 34, and will assume the position illustrated on Fig. 1. I

The purpose of the extension 39 and {lug 40 is to guard lever33 against bending olrits pivot point within clamp 32 which would otherwise ensue on accidentally turning the handle 21 without first raising the lever 33 by pressing on head 34 preparatory to turning said handle.

The present invention is designed to be:

valve-plug,

used in connection with various sizes of valve-plugs 11 and shanks 19. For this purpose sheath36 or 42 may be extended so as to make lever 33 longer to correspond with the length of shank 19 as is obvious.

lVhile there-is described hereina preferredembodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and-scope ot the invention as claimed.

lVhat I claim as new is: I I

'1. In a valve lock cooperating with a valve casing and a valve-plug thenewithin, a plate fitted'upou said valve-plug, an extension upon said plate, a lever pivoted in said extension, said lever normally engaging the valve casing to hold the valve closed, and means cooperating with said plate and said lever for preventing bending of said lever on its pivot point in attempting-to operate the -valve-plug.without first releasing the engagment of said lever with the valve casing.

In a valve lock cooperating with a valve casing and a valve-plug therewithin, a plate titted upon said valve-plug, an extension upon said plate, a lever pivoted in said extension, said lever normally engaging the valve casing to hold the valve closed (another extension upon said plate, and a flange upon said last named extension, said flange abutting said lever for preventingbending thereof on .its pivot point in attempting to operate the valve-plug without first releasing the engagement of said lever with the valve casing.

3. In a valve casing and a valve-plug 00- operating therewith, said casing having. a notch, the combination of a plate uponsaid a lever associated with said plate, and an extensible sheath upon said lever, said sheath fitting within said notch for holding the valve-plug against'rotation.

4:; In a valve casing and a valve-plug cooperating therewith, said casing having a notch, the combination of a plate upon said valve-plug, an extension upon said plate, a

lever pivoted within said extension, said lever normally engaging the valve casing to hold the valve closed, another extension upon said plate, a flange upon said last named ex- I GOLFRED DANKO.

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